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  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
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<body>
  <script>
    let goods = {
      name: `小米10青春版`,
      num: `100337334322`,
      weight: `0.55kg`,
      add: `中国大陆`
    }
    //  改    对象名.属性名 =新值    重新赋值
      goods.name=`小米10plus`
      goods.num=`3238447322930`
      // 增   对象名.新属性名=新值     设置新的属性名就是增
      goods.color=`pink`
      goods.length=`8寸`
      console.log(goods.name);
       console.log(goods.num);
        console.log(goods.weight);
         console.log(goods.add);
          console.log(goods.color);
          console.log(goods.length);
  </script>
</body>

</html>